qdatetimeaxis.cpp
388 lines
| 10.3 KiB
| text/x-c
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CppLexer
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r1717 | /**************************************************************************** | ||
** | ||||
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r2688 | ** Copyright (C) 2014 Digia Plc | ||
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r1717 | ** All rights reserved. | ||
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r2740 | ** For any questions to Digia, please use contact form at http://qt.io | ||
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r1717 | ** | ||
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r2740 | ** This file is part of the Qt Charts module. | ||
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r1717 | ** | ||
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r2740 | ** Licensees holding valid commercial license for Qt may use this file in | ||
** accordance with the Qt License Agreement provided with the Software | ||||
** or, alternatively, in accordance with the terms contained in a written | ||||
** agreement between you and Digia. | ||||
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r1717 | ** | ||
** If you have questions regarding the use of this file, please use | ||||
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r2740 | ** contact form at http://qt.io | ||
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r1717 | ** | ||
****************************************************************************/ | ||||
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r2714 | #include <QtCharts/QDateTimeAxis> | ||
#include <private/qdatetimeaxis_p.h> | ||||
#include <private/chartdatetimeaxisx_p.h> | ||||
#include <private/chartdatetimeaxisy_p.h> | ||||
#include <private/polarchartdatetimeaxisangular_p.h> | ||||
#include <private/polarchartdatetimeaxisradial_p.h> | ||||
#include <private/abstractdomain_p.h> | ||||
#include <QtCharts/QChart> | ||||
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r2125 | #include <float.h> | ||
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r1717 | #include <cmath> | ||
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r2712 | QT_CHARTS_BEGIN_NAMESPACE | ||
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r1717 | /*! | ||
\class QDateTimeAxis | ||||
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r2639 | \inmodule Qt Charts | ||
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r1717 | \brief The QDateTimeAxis class is used for manipulating chart's axis. | ||
\mainclass | ||||
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r1801 | The labels can be configured by setting an appropriate DateTime format. | ||
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r2494 | QDateTimeAxis works correctly with dates from 4714 BCE to 287396 CE. | ||
There are also other limitiation related to QDateTime. Please refer to QDateTime documentation. | ||||
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r1801 | QDateTimeAxis can be setup to show axis line with tick marks, grid lines and shades. | ||
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r1882 | |||
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r2396 | Note: QDateTimeAxis is disabled on ARM architecture. | ||
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r1984 | |||
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r1887 | \image api_datatime_axis.png | ||
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r2494 | QDateTimeAxis can be used with any QXYSeries. | ||
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r1984 | To add a data point to the series QDateTime::toMSecsSinceEpoch() is used. | ||
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r1882 | \code | ||
QLineSeries *series = new QLineSeries; | ||||
QDateTime xValue; | ||||
xValue.setDate(QDate(2012, 1 , 18)); | ||||
xValue.setTime(QTime(9, 34)); | ||||
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r1984 | qreal yValue = 12; | ||
series->append(xValue.toMSecsSinceEpoch(), yValue); | ||||
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r1882 | |||
xValue.setDate(QDate(2013, 5 , 11)); | ||||
xValue.setTime(QTime(11, 14)); | ||||
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r1984 | qreal yValue = 22; | ||
series->append(xValue.toMSecsSinceEpoch(), yValue); | ||||
\endcode | ||||
Adding the series to the chart and setting up the QDateTimeAxis. | ||||
\code | ||||
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r2097 | QChartView *chartView = new QChartView; | ||
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r1882 | chartView->chart()->addSeries(series); | ||
// ... | ||||
QDateTimeAxis *axisX = new QDateTimeAxis; | ||||
axisX->setFormat("dd-MM-yyyy h:mm"); | ||||
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r2108 | chartView->chart()->setAxisX(axisX, series); | ||
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r1882 | \endcode | ||
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r1717 | */ | ||
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r2639 | /*! | ||
\qmltype DateTimeAxis | ||||
\instantiates QDateTimeAxis | ||||
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r2712 | \inqmlmodule QtCharts | ||
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r2639 | |||
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r2712 | \brief The DateTimeAxis element is used for manipulating chart's axes. | ||
\inherits AbstractAxis | ||||
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r1801 | |||
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r2712 | The labels can be configured by setting an appropriate DateTime format. | ||
Note that any date before 4714 BCE or after about 1.4 million CE may not be accurately stored. | ||||
DateTimeAxis can be setup to show axis line with tick marks, grid lines and shades. | ||||
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r1717 | */ | ||
/*! | ||||
\property QDateTimeAxis::min | ||||
Defines the minimum value on the axis. | ||||
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r1730 | When setting this property the max is adjusted if necessary, to ensure that the range remains valid. | ||
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r1717 | */ | ||
/*! | ||||
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r2686 | \qmlproperty datetime DateTimeAxis::min | ||
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r1717 | Defines the minimum value on the axis. | ||
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r1730 | When setting this property the max is adjusted if necessary, to ensure that the range remains valid. | ||
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r1717 | */ | ||
/*! | ||||
\property QDateTimeAxis::max | ||||
Defines the maximum value on the axis. | ||||
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r1730 | When setting this property the min is adjusted if necessary, to ensure that the range remains valid. | ||
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r1717 | */ | ||
/*! | ||||
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r2686 | \qmlproperty datetime DateTimeAxis::max | ||
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r1717 | Defines the maximum value on the axis. | ||
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r1730 | When setting this property the min is adjusted if necessary, to ensure that the range remains valid. | ||
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r1717 | */ | ||
/*! | ||||
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r1731 | \fn void QDateTimeAxis::minChanged(QDateTime min) | ||
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r1717 | Axis emits signal when \a min of axis has changed. | ||
*/ | ||||
/*! | ||||
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r2686 | \qmlsignal DateTimeAxis::onMinChanged(datetime min) | ||
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r1717 | Axis emits signal when \a min of axis has changed. | ||
*/ | ||||
/*! | ||||
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r1731 | \fn void QDateTimeAxis::maxChanged(QDateTime max) | ||
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r1717 | Axis emits signal when \a max of axis has changed. | ||
*/ | ||||
/*! | ||||
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r2686 | \qmlsignal DateTimeAxis::onMaxChanged(datetime max) | ||
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r1717 | Axis emits signal when \a max of axis has changed. | ||
*/ | ||||
/*! | ||||
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r1731 | \fn void QDateTimeAxis::rangeChanged(QDateTime min, QDateTime max) | ||
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r1717 | Axis emits signal when \a min or \a max of axis has changed. | ||
*/ | ||||
/*! | ||||
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r1812 | \property QDateTimeAxis::tickCount | ||
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r1717 | The number of tick marks for the axis. | ||
*/ | ||||
/*! | ||||
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r2027 | \qmlproperty int DateTimeAxis::tickCount | ||
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r1717 | The number of tick marks for the axis. | ||
*/ | ||||
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r2027 | /*! | ||
\property QDateTimeAxis::format | ||||
The format string that is used when creating label for the axis out of a QDateTime object. | ||||
Check QDateTime documentation for information on how the string should be defined. | ||||
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r2708 | |||
\sa QChart::locale | ||||
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r2027 | */ | ||
/*! | ||||
\qmlproperty string DateTimeAxis::format | ||||
The format string that is used when creating label for the axis out of a QDateTime object. | ||||
Check QDateTime documentation for information on how the string should be defined. | ||||
*/ | ||||
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r2339 | /*! | ||
\fn void QDateTimeAxis::tickCountChanged(int tickCount) | ||||
Axis emits signal when \a tickCount number on axis have changed. | ||||
*/ | ||||
/*! | ||||
\qmlsignal DateTimeAxis::tickCountChanged(int tickCount) | ||||
Axis emits signal when \a tickCount number on axis have changed. | ||||
*/ | ||||
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r2027 | /*! | ||
\fn void QDateTimeAxis::formatChanged(QString format) | ||||
Axis emits signal when \a format of the axis has changed. | ||||
*/ | ||||
/*! | ||||
\qmlsignal DateTimeAxis::onFormatChanged(string format) | ||||
Axis emits signal when \a format of the axis has changed. | ||||
*/ | ||||
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r1717 | /*! | ||
Constructs an axis object which is a child of \a parent. | ||||
*/ | ||||
QDateTimeAxis::QDateTimeAxis(QObject *parent) : | ||||
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r2097 | QAbstractAxis(*new QDateTimeAxisPrivate(this), parent) | ||
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r1717 | { | ||
} | ||||
/*! | ||||
\internal | ||||
*/ | ||||
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r2097 | QDateTimeAxis::QDateTimeAxis(QDateTimeAxisPrivate &d, QObject *parent) : QAbstractAxis(d, parent) | ||
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r1717 | { | ||
} | ||||
/*! | ||||
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r2686 | Destroys the object. | ||
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r1717 | */ | ||
QDateTimeAxis::~QDateTimeAxis() | ||||
{ | ||||
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r2273 | Q_D(QDateTimeAxis); | ||
if (d->m_chart) | ||||
d->m_chart->removeAxis(this); | ||||
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r1717 | } | ||
void QDateTimeAxis::setMin(QDateTime min) | ||||
{ | ||||
Q_D(QDateTimeAxis); | ||||
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r1728 | if (min.isValid()) | ||
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r2273 | d->setRange(min.toMSecsSinceEpoch(), qMax(d->m_max, qreal(min.toMSecsSinceEpoch()))); | ||
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r1717 | } | ||
QDateTime QDateTimeAxis::min() const | ||||
{ | ||||
Q_D(const QDateTimeAxis); | ||||
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r2273 | return QDateTime::fromMSecsSinceEpoch(d->m_min); | ||
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r1717 | } | ||
void QDateTimeAxis::setMax(QDateTime max) | ||||
{ | ||||
Q_D(QDateTimeAxis); | ||||
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r1728 | if (max.isValid()) | ||
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r2273 | d->setRange(qMin(d->m_min, qreal(max.toMSecsSinceEpoch())), max.toMSecsSinceEpoch()); | ||
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r1717 | } | ||
QDateTime QDateTimeAxis::max() const | ||||
{ | ||||
Q_D(const QDateTimeAxis); | ||||
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r2273 | return QDateTime::fromMSecsSinceEpoch(d->m_max); | ||
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r1717 | } | ||
/*! | ||||
Sets range from \a min to \a max on the axis. | ||||
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r1730 | If min is greater than max then this function returns without making any changes. | ||
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r1717 | */ | ||
void QDateTimeAxis::setRange(QDateTime min, QDateTime max) | ||||
{ | ||||
Q_D(QDateTimeAxis); | ||||
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r1728 | if (!min.isValid() || !max.isValid() || min > max) | ||
return; | ||||
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r1717 | |||
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r2273 | d->setRange(min.toMSecsSinceEpoch(),max.toMSecsSinceEpoch()); | ||
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r1717 | } | ||
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r1801 | void QDateTimeAxis::setFormat(QString format) | ||
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r1717 | { | ||
Q_D(QDateTimeAxis); | ||||
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r2027 | if (d->m_format != format) { | ||
d->m_format = format; | ||||
emit formatChanged(format); | ||||
} | ||||
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r1717 | } | ||
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r1801 | QString QDateTimeAxis::format() const | ||
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r1717 | { | ||
Q_D(const QDateTimeAxis); | ||||
return d->m_format; | ||||
} | ||||
/*! | ||||
Sets \a count for ticks on the axis. | ||||
*/ | ||||
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r1801 | void QDateTimeAxis::setTickCount(int count) | ||
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r2097 | { | ||
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r1717 | Q_D(QDateTimeAxis); | ||
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r2097 | if (d->m_tickCount != count && count >= 2) { | ||
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r1717 | d->m_tickCount = count; | ||
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r2273 | emit tickCountChanged(count); | ||
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r1717 | } | ||
} | ||||
/*! | ||||
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r1812 | \fn int QDateTimeAxis::tickCount() const | ||
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r2686 | Return number of ticks on the axis. | ||
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r1717 | */ | ||
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r1801 | int QDateTimeAxis::tickCount() const | ||
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r1717 | { | ||
Q_D(const QDateTimeAxis); | ||||
return d->m_tickCount; | ||||
} | ||||
/*! | ||||
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r2686 | Returns the type of the axis. | ||
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r1717 | */ | ||
QAbstractAxis::AxisType QDateTimeAxis::type() const | ||||
{ | ||||
return AxisTypeDateTime; | ||||
} | ||||
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | ||||
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r2104 | QDateTimeAxisPrivate::QDateTimeAxisPrivate(QDateTimeAxis *q) | ||
: QAbstractAxisPrivate(q), | ||||
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r2273 | m_min(0), | ||
m_max(0), | ||||
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r2104 | m_tickCount(5) | ||
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r1717 | { | ||
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r2712 | m_format = QStringLiteral("dd-MM-yyyy\nh:mm"); | ||
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r1717 | } | ||
QDateTimeAxisPrivate::~QDateTimeAxisPrivate() | ||||
{ | ||||
} | ||||
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r2273 | void QDateTimeAxisPrivate::setRange(qreal min,qreal max) | ||
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r1717 | { | ||
Q_Q(QDateTimeAxis); | ||||
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r2273 | bool changed = false; | ||
if (m_min != min) { | ||||
m_min = min; | ||||
changed = true; | ||||
emit q->minChanged(QDateTime::fromMSecsSinceEpoch(min)); | ||||
} | ||||
if (m_max != max) { | ||||
m_max = max; | ||||
changed = true; | ||||
emit q->maxChanged(QDateTime::fromMSecsSinceEpoch(max)); | ||||
} | ||||
if (changed) { | ||||
emit q->rangeChanged(QDateTime::fromMSecsSinceEpoch(min), QDateTime::fromMSecsSinceEpoch(max)); | ||||
emit rangeChanged(m_min,m_max); | ||||
} | ||||
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r1717 | } | ||
void QDateTimeAxisPrivate::setMin(const QVariant &min) | ||||
{ | ||||
Q_Q(QDateTimeAxis); | ||||
if (min.canConvert(QVariant::DateTime)) | ||||
q->setMin(min.toDateTime()); | ||||
} | ||||
void QDateTimeAxisPrivate::setMax(const QVariant &max) | ||||
{ | ||||
Q_Q(QDateTimeAxis); | ||||
if (max.canConvert(QVariant::DateTime)) | ||||
q->setMax(max.toDateTime()); | ||||
} | ||||
void QDateTimeAxisPrivate::setRange(const QVariant &min, const QVariant &max) | ||||
{ | ||||
Q_Q(QDateTimeAxis); | ||||
if (min.canConvert(QVariant::DateTime) && max.canConvert(QVariant::DateTime)) | ||||
q->setRange(min.toDateTime(), max.toDateTime()); | ||||
} | ||||
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r2273 | void QDateTimeAxisPrivate::initializeGraphics(QGraphicsItem* parent) | ||
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r1717 | { | ||
Q_Q(QDateTimeAxis); | ||||
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r2483 | ChartAxisElement *axis(0); | ||
if (m_chart->chartType() == QChart::ChartTypeCartesian) { | ||||
if (orientation() == Qt::Vertical) | ||||
axis = new ChartDateTimeAxisY(q,parent); | ||||
if (orientation() == Qt::Horizontal) | ||||
axis = new ChartDateTimeAxisX(q,parent); | ||||
} | ||||
if (m_chart->chartType() == QChart::ChartTypePolar) { | ||||
if (orientation() == Qt::Vertical) | ||||
axis = new PolarChartDateTimeAxisRadial(q, parent); | ||||
if (orientation() == Qt::Horizontal) | ||||
axis = new PolarChartDateTimeAxisAngular(q, parent); | ||||
} | ||||
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r2273 | |||
m_item.reset(axis); | ||||
QAbstractAxisPrivate::initializeGraphics(parent); | ||||
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r1717 | } | ||
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r2275 | void QDateTimeAxisPrivate::initializeDomain(AbstractDomain *domain) | ||
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r1717 | { | ||
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r2097 | if (m_max == m_min) { | ||
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r2273 | if (orientation() == Qt::Vertical) | ||
setRange(domain->minY(), domain->maxY()); | ||||
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r2097 | else | ||
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r2273 | setRange(domain->minX(), domain->maxX()); | ||
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r1717 | } else { | ||
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r2273 | if (orientation() == Qt::Vertical) | ||
domain->setRangeY(m_min, m_max); | ||||
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r2097 | else | ||
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r2273 | domain->setRangeX(m_min, m_max); | ||
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r1717 | } | ||
} | ||||
#include "moc_qdatetimeaxis.cpp" | ||||
#include "moc_qdatetimeaxis_p.cpp" | ||||
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r2712 | QT_CHARTS_END_NAMESPACE | ||